1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
#include <iostream>
#include <vector>
#include <cassert>
#include <cmath>
#include "config.h"
#ifdef HAVE_MPI
#include <boost/mpi.hpp>
#endif
#include <boost/program_options.hpp>
#include <boost/program_options/variables_map.hpp>
#include "cllh_observer.h"
#include "sentence_metadata.h"
#include "verbose.h"
#include "hg.h"
#include "prob.h"
#include "inside_outside.h"
#include "ff_register.h"
#include "decoder.h"
#include "filelib.h"
#include "weights.h"
using namespace std;
namespace po = boost::program_options;
bool InitCommandLine(int argc, char** argv, po::variables_map* conf) {
po::options_description opts("Configuration options");
opts.add_options()
("weights,w",po::value<string>(),"Input feature weights file")
("training_data,t",po::value<string>(),"Training data corpus")
("decoder_config,c",po::value<string>(),"Decoder configuration file");
po::options_description clo("Command line options");
clo.add_options()
("config", po::value<string>(), "Configuration file")
("help,h", "Print this help message and exit");
po::options_description dconfig_options, dcmdline_options;
dconfig_options.add(opts);
dcmdline_options.add(opts).add(clo);
po::store(parse_command_line(argc, argv, dcmdline_options), *conf);
if (conf->count("config")) {
ifstream config((*conf)["config"].as<string>().c_str());
po::store(po::parse_config_file(config, dconfig_options), *conf);
}
po::notify(*conf);
if (conf->count("help") || !conf->count("training_data") || !conf->count("decoder_config")) {
cerr << dcmdline_options << endl;
return false;
}
return true;
}
void ReadInstances(const string& fname, int rank, int size, vector<string>* c) {
assert(fname != "-");
ReadFile rf(fname);
istream& in = *rf.stream();
string line;
int lc = 0;
while(in) {
getline(in, line);
if (!in) break;
if (lc % size == rank) c->push_back(line);
++lc;
}
}
static const double kMINUS_EPSILON = -1e-6;
#ifdef HAVE_MPI
namespace mpi = boost::mpi;
#endif
int main(int argc, char** argv) {
#ifdef HAVE_MPI
mpi::environment env(argc, argv);
mpi::communicator world;
const int size = world.size();
const int rank = world.rank();
#else
const int size = 1;
const int rank = 0;
#endif
if (size > 1) SetSilent(true); // turn off verbose decoder output
register_feature_functions();
po::variables_map conf;
if (!InitCommandLine(argc, argv, &conf))
return false;
// load cdec.ini and set up decoder
ReadFile ini_rf(conf["decoder_config"].as<string>());
Decoder decoder(ini_rf.stream());
if (decoder.GetConf()["input"].as<string>() != "-") {
cerr << "cdec.ini must not set an input file\n";
abort();
}
// load weights
vector<weight_t>& weights = decoder.CurrentWeightVector();
if (conf.count("weights"))
Weights::InitFromFile(conf["weights"].as<string>(), &weights);
vector<string> corpus;
ReadInstances(conf["training_data"].as<string>(), rank, size, &corpus);
assert(corpus.size() > 0);
if (rank == 0)
cerr << "Each processor is decoding ~" << corpus.size() << " training examples...\n";
ConditionalLikelihoodObserver observer;
for (int i = 0; i < corpus.size(); ++i)
decoder.Decode(corpus[i], &observer);
double objective = 0;
unsigned total_words = 0;
#ifdef HAVE_MPI
reduce(world, observer.acc_obj, objective, std::plus<double>(), 0);
reduce(world, observer.trg_words, total_words, std::plus<unsigned>(), 0);
#else
objective = observer.acc_obj;
total_words = observer.trg_words;
#endif
if (rank == 0) {
cout << "CONDITIONAL LOG_e LIKELIHOOD: " << objective << endl;
cout << "CONDITIONAL LOG_2 LIKELIHOOD: " << (objective/log(2)) << endl;
cout << " CONDITIONAL ENTROPY: " << (objective/log(2) / total_words) << endl;
cout << " PERPLEXITY: " << pow(2, (objective/log(2) / total_words)) << endl;
}
return 0;
}
|
